ListView item中按钮点击实现删除

在处理ListView 中item的按钮点击事件首先需要在item的根布局中添加

android:descendantFocusability="blocksDescendants"属性，否则item的点击事件会把其中image button的点击事件屏蔽掉

item的布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:descendantFocusability="blocksDescendants"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
    <TextView
        android:textColor="#333333"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginLeft="10dp"
        android:textSize="18sp"
        android:id="@+id/tv_title"
        android:text="我的日记"/>
        <TextView
            android:layout_below="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:layout_marginLeft="10dp"
            android:layout_marginBottom="10dp"
            android:id="@+id/tv_content"
            android:textColor="#333333"
            android:text="内容"/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="删除"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            android:layout_marginRight="8dp"
            android:id="@+id/bt_delect"/>
    </RelativeLayout>
</LinearLayout>

主页面布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.notetext.ui.MainActivity">



    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp">

        <TextView
            android:id="@+id/bt_add"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="15dp"
            android:onClick="add"
            android:text="添加" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="我的日记"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/bt_setting"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="15dp"
            android:onClick="set"
            android:text="设置" />

    </RelativeLayout>
    <ListView
        android:id="@+id/lv_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></ListView>
</LinearLayout>

代码：

package com.example.notetext.ui;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.notetext.modul.Content;
import com.example.notetext.R;

import java.io.Serializable;
import java.util.ArrayList;

public class MainActivity extends Activity {
    private ListView list;
    private ArrayList<Content> arraylist = new ArrayList<>();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list = (ListView) findViewById(R.id.lv_list);
        initData();

        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
                Content context = arraylist.get(position);
                Toast.makeText(getApplicationContext(), "条目点击了", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(getApplicationContext(), LookActivity.class);
                intent.putExtra("content", (Serializable) context);
                startActivity(intent);
            }

        });
    }
    private MyAdapter adapter;

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Toast.makeText(getApplicationContext(), "zhixing", Toast.LENGTH_SHORT).show();
        if (data != null) {
            switch (requestCode) {
                case 1:
                    Toast.makeText(getApplicationContext(), "zhixing", Toast.LENGTH_SHORT).show();
                    Content content = (Content) data.getExtras().getSerializable("content");
                    arraylist.add(content);
                    MyAdapter adapter = new MyAdapter(arraylist);
                    list.setAdapter(adapter);
                    break;
            }
        }
    }

    private void initData() {
        MyAdapter adapter = new MyAdapter(arraylist);
        list.setAdapter(adapter);
        adapter.notifyDataSetChanged();
    }

    public void add(View view) {
        Intent intent = new Intent(this, ChangeActivity.class);
        startActivityForResult(intent, 1);
    }

    public void set(View view) {
        Intent intent = new Intent (this,SettingActivity.class);
        startActivity(intent);

    }
    public class MyAdapter extends BaseAdapter {
        private ArrayList<Content> arrayList;

        public MyAdapter(ArrayList<Content> arrayList) {
            this.arrayList = arrayList;
        }

        @Override
        public int getCount() {
            return arrayList.size();
        }

        @Override
        public Object getItem(int position) {
            return arrayList.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(final int position, View convertView, final ViewGroup parent) {
            Holder holder;
            if (convertView == null) {
                convertView = View.inflate(getApplicationContext(), R.layout.item_note, null);
                holder = new Holder(convertView);

                convertView.setTag(holder);
            } else {
                holder = (Holder) convertView.getTag();
            }
            final Content content = arrayList.get(position);
            holder.tv_title.setText(content.getTitle());
            holder.tv_content.setText(content.getContent());
            holder.bt_delect.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
　　　　　　　　　　　　//将选中的条目在arrayList中移除
                    arrayList.remove(position);
　　　　　　　　　　　　//刷新界面
                    initData();
                    Log.e("删除条目","33333333333333");
                }
            });
            return convertView;
        }

        class Holder {
            private TextView tv_title;
            private TextView tv_content;
            private Button bt_delect;
            public Holder(View convertView) {
                tv_title =(TextView)convertView.findViewById(R.id.tv_title);
                tv_content =(TextView)convertView.findViewById(R.id.tv_content);
                bt_delect = (Button) convertView.findViewById(R.id.bt_delect);
            }
        }
    }
}